GeoTrace

GeoTrace is a field-survey app that moves data between QGIS and an Android tablet. Draw directly on the map like marking a paper map, and capture points, GPS tracks, and freehand notes as GIS data to bring back into QGIS.

■ Great for
· Field surveyors in environment, ecology, geography, and forestry
· GIS specialists who organize data in QGIS
· Survey teams recording fieldwork with a tablet and stylus
■ Key features
Map-first survey screen
· Full-screen map with unobtrusive tool panels
· Fingers pan and zoom, the pen draws — roles kept separate
· Switch base maps: satellite, standard, hybrid
Pen sketching
· Pen, highlighter, and eraser with color and thickness options
· Strokes are anchored to map coordinates, not the screen, so they stay in place when you zoom or pan
· Automatic stylus detection — finger drawing for devices without a pen
Survey points
· Create points at your current location or by tapping the map
· Enter a name and notes; altitude and time are saved automatically
GPS track recording
· Record your route in real time with adjustable color and width
· Keeps recording with the screen off or while using other apps
Heading compass and signal-status indicator
Import GIS files
· Load GeoPackage (GPKG) and KML
· Coordinate systems from around the world are reprojected automatically (Korean EPSG:5186, UTM, and more)
· Per-layer color, opacity, outline, and labels; tap a label to view its content
Offline map download
· Tap two corners on the map to define an area
· Choose a zoom range and see the estimated size
· Save base and overlay together under a name and reuse them offline
Save results and resume
· Export results as a ZIP (including GeoPackage)
· Reopen the app the next day to resume your previous session
· Use points, tracks, and sketch vectors directly in QGIS
Localization and settings
· Korean / English
· Coordinate format, GPS interval, compass calibration, keep-screen-on, and more
■ Notes
· The free version shows an ad when you save results.
· Location is used only for map display and point/track recording, and is stored on the device.
· Privacy policy: https://stylax2.github.io/GeoTrace/privacy.html